Grinding wheel dressing tool



July 20,1943.

E. L. MEESON ErAL GRINDING WHEEL DRESSING TOOL Filed April 9, 1943 Patented July 20. 1943 e U N IT IS STAT axis of the holder at difierent angles. v

' ber 4 is formed internally with an equalnumber p ES" FATENT' oFFlor.

oammN W EE -pREssrN TOOL Edwin Laurence Meeson and Ivor LpndomEngland Mecson,

Application April 9, i943, SerialNo. 482.452 7 r Iii-Great'BritainJune 26, 1942 i This invention relates to tools for dressing the;

operative surfaces of grinding Wheels andfor otherpurposes, and has for its object to enable the effective portion of the tool to be readily changed as and when required from one definite and known angular position or rake to any of" i a plurality of other similarly known and definite positions.

According to the present invention the effective Y part of the tool, that is to's'ay, the' slug carrying I the diamond or other cutting element or ele ments, is adapted to be firmly clamped in any one of a plurality of differently inclinedpositions in a holder by relative axial movement between the latter and a member carried thereby.

, In the accompanyingdrawing,

.the head 3;of the holder. w on the member 4 by springing itover the flange I 1 ll thereof. Y 2

As will now be understood rotation ofthe nut 1 H) in one direction or? the other'will cause relative v by that of the socket in whichit is inserted. In

Figures land 2 are side and front views'respectively of the improved tool.

Figure 3 is a view thereof partly in axial plane section. V

V Figure 4 is a detail view in sideelevation of the shank and head of thetool holder:

Figures S and 6 are detail views in front Tele- .7 vation and axial plane-section respectively of the axially movable member.

Figures 7 and 8 are similar detail views respectively of the locking member.

Referring to the construction shown ure 4; having a screw-threadedhead-or flange 3, and a member-.4, see Figures and. 6, which is carried loosely by a forwardly projecting central part 5 of theholder. The said. part 5 is formed externally with a plurality'of axiallydirected re cesses 6, the bases 1 of which are inclined to the of similarly inclined axial recessesil, the arrange- I in the drawing the tool comprises a holder 2,'see Figformed with interlocking flanges'll and; l2 r spect'ively Between the nut 10 and member 4 a washer' I3 of-fibreor other suitablematerial is 7 arranged to absorb vibrationand to prevent the intrusioniof grinding grit between the nut and axial movement between the member 4 and the part 5 of the holder in a direction to contract or expand the'sockets and thereby clamp a slug 'inserted in any one of them firmly in position at an angle to the axis of the holder pre-determined this way the angle or rake'of the slug can be varied in a definite Way and to a predetermined degree. a We claim:

said head and membergfor thepurpose of clamp- Thememment being such othatf'when the'said member "4 is engaged withthe part 5 of the holder and the recess s in t e one part registered with'their'respective counterpart recesses in the otherpart, a' I plurality of longitudinally divided sockets is I formed having their axes at different inclinations" tation to move said member relatively to said l 1 head in an axial direction for the purpose, of clamping a diamond carrying slug inany one of I tothe axis of the holder. r

The diamond-carrying slug 9 represented .jin dotted lines in Figure 3, can be firmly clamped in any one of said socketsbyrelative axial move- I .ment between the member 4 and the part5 of the T holder. This relative movement may be'obtaine'd' by meansoi 'a ring nutr l0, seeFigures 7 and'8 screwing onto thehead or flange 3 of the holder behind and inengagement with saidmember 4. Forithispurposethe rear edge of the member 4 t and the forward'inner edge of the nut l0 may be said stem.

,ing a diamond-carryingslug in any one'of said sockets at a predetermined angle to the axis of 2.; A tool of'th being eachformed with. an'annular series .of recesses around thei outer and inner peripheries respectivelyithe recesses in the one part register ing-wltl'i those, in the other partjtoform a series of p "dividedsockets having.theiraxesinclined atdif ferent angles to the axis'of saidstem, and-aringnut screwing onto said head and adapted onrosaid sockets at anjangle to the axislof said stem pre-determined by that of said socket;

3. A tool forjthe purposes described comprising a stem and a head; said head being formed with. 7 an annular series of 'split sockets having their, axes variously inclined to the axis of saidstem,

and each adapted' to receive a'diamond carrying 'I'hef nut is assembled character described comprising a stem havinga head at one end, a member loose 'ly, mounted onsaid head; said head and member said sockets. v

4. Atooi for the purposes described comprising a. stem and a head, said head Comprising two con entrically arranged parts havinga series of variousiy inclined grooves in their inner and outer peripheries respectively, the grooves in one part registering with those in the other part to form a slug, and ineans for contractingand expanding series 01. divided sockets having their axes inclined at different angles to the axis of said stem 

